Accession Number:

ADA019578

Title:

Semi-Annual Report, Project T/4703 Special Data Collection Systems January through June 1975

Descriptive Note:

Corporate Author:

TELEDYNE GEOTECH GARLAND TX

Personal Author(s):

Report Date:

1975-06-30

Pagination or Media Count:

64.0

Abstract:

The work performed under Project T4703, Special Data Collection Systems, during the period from 1 January through 30 June 1975 is described. In addition, a summary of work done under this contract since its inception in August 1973 is presented. Five SDCS systems were deployed in February and March to sites in the Continental U.S. and Canada which had been previously occupied. Sites at Houlton, Maine Red Lake, Ontario and Whitehorse, Yukon, are standard units the site at Cumberland Plateau Observatory uses that stations SP array on its SP input and the site at Franklin, West Virginia, uses a Model 36000 Borehole Seismometer System. The five stations have routinely collected seismic data on a continuous basis since setup operations were complete. Data analysis tasks for the program are being done at the SDAC in Alexandria, Virginia. Forty-six requests for event reports have been received since March, and the reports are in various stages of completion. One special project was completed during this period. Its purpose was to study several geophysical methods of locating existing shallow tunnels. A report, AL-75-1, Tunnel Detection by Magnetometer, Active Seismic and Radon Decay Methods, was published and distributed in June.

Subject Categories:

  • Seismology
  • Seismic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE